<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<!--块级分区标签:独占一行-->
<div>div1</div>
<div>div2</div>
<div>div3</div>
<!--行内分区标签:共占一行-->
<span>span1</span>
<span>span2</span>
<span>span3</span>
<!--一个页面至少分为三大区: 头 体 脚-->
<div>头</div>
<div>体</div>
<div>脚</div>
<!--HTML5的标准中新增了几个分区标签作用和div一样,为了提高代码的可读性-->
<header>头</header>
<main>主体</main>
<footer>脚</footer>
<nav>导航</nav>
<section>区域</section>
<article>文章</article>
<aside>侧边</aside>
</body>
</html>